Support for GEGL plugins dir in homedir

[Flashwalker]

Hi.

Is there any way to make this gimp-appimage use the ~/.local/share/gegl-0.4/plug-ins directory?

Plugins in this directory are loaded when you start GIMP installed on your system, but are not loaded by this gimp-appimage

[Flashwalker]

I think it should be something like:

export GEGL_PATH="${HOME}/.local/share/gegl-0.4":$(readlink -f "$DIR/usr/lib64/gegl-0.4")

or:

export GEGL_PATH=${GEGL_PATH}:"${HOME}/.local/share/gegl-0.4":$(readlink -f "$DIR/usr/lib64/gegl-0.4")

[Flashwalker]

I tested it with unpacked appimage and looks like it works

[luzpaz]

bumping